Mar 4, 2014 5:00pm PST
, and lifts. although jim says it is a version of the adult classes, it is not too dangerous or too much for the little ones. >> it is a high repetition of a weight they can handle which starts to get into the card owe side. it is functional movements. they learn how to use their body as efficiently as possible. >> i first heard about cross fit and tried it, i'm thinking this exercising is a lot of work but it's really fun. >> the american academy of pediatrics says research shows it is safe for kids to start light weight lifting at age eight. some doctors disagree. they say kids bones, muscles and tendons are still maturing and they may be pushing their bodies too hard. >> well, they are up off the couch. >> that's true. >>> now for a look at what's i had on the cbs evening news. >> -- ahead on the cbs evening news. >> scott pelly is in new york. >> we're going to be covering the super power crisis after crimea putin talked to today after what's next. elizabeth palmer is covering the russian invasion. david martin will have new details on today's missile watch. >>> plus, gm's chief has
Feb 25, 2014 5:00pm PST
lapook reports. and 50 years ago today... >> tell me i am the greatest. >> pelley: jim axelrod recalls the fight that created muhammad ali. >> after 50 years, it's still thrilling to me. captioning sponsored by cbs this is the "cbs evening news" with scott pelley.